.index{
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgb(226,216,250), rgb(243,242,247));


}
.box{
    width: 80%;
    height:60%;
    margin: 0 auto;
}
.footer{
    width: 100%;
    height: 20%;
}
.rv-nav-bar{        
    background-color: transparent; /* 完全透明背景 */
}


